Building material.



No. 704,066. Patented July 8, I902.

M. W. MARSDEN.

BUILDING MATERIAL.

(Application filed Sept. 24, 1901.) (No Medal.) 2 Sheets-Sheet l.

Patented July 8, I902.

M. W. MARSDEN.

BUILDING MATERIAL.

(Application filed Sept. 24, 1901.)

2 Sheets-Sheet 2.

(No Model.)

I 1 1 van to;

329% WWW/8W...

auto mu UNITED STATES PATENT OFFICE.

MARK IV. MARSDEN, OF PHILADELPHIA, PENNSYLVANIA.

BUILDING MATERlAL.

SPECIFICATION forming part of Letters Patent No. 704,066, dated July 8,1902.

Application filed September 24,1901. Serial No. 76,851. (No specimens.)

T to whom, it may concern:

Be it known that 1, MARK W. MARsDEN, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia, State ofPennsylvania, have invented certain new and useful Improvements inBuilding Haterial, of which the following is a specification.

My invention relates to fireproof material for building purposes, andhas for one object to provide a fireproof material which shall becomparatively inexpensive, light, strong, easily erected, and welladapted for the reception of plaster.

Further, the invention has for an object to provide a perfect substitutefor sheet-metal plates, laths, and such like plaster-sustaining meansand which will be advantageous in respect to the metal in that it isless expensive and more easily worked.

A still further object of the invention is to provide a fibrous sheet orplate which may be suitably perforated or otherwise arranged to providepockets or shelves into or through which the plaster may key, and thusfirmly support the body.

The nature, characteristic features, and scope of the invention will bemore fully understood from the following description,taken in connectionwith the accompanying drawings, forming a part hereof, and in which-Figure 1 illustrates a partition or wall constructed of perforatedfibrous sheets made in accordance with my invention. 'Fig. 2 is asectional view taken on line 2 2 of Fig. 1. Figs. 3, at, 5, and 6illustrate tie or distance pieces. Figs. 7 and 8 are respectively faceand sectional views illustrating a modification. Figs. 9 to 16illustrate varied types of fibrous sheets or plates.

In practicing my invention I employ any suitable fibrous material. Ihave obtained excellent results by the use of cardboard or asbestos, butof course do not confine myself to such materials and merely mentionthem as examples. For example, I take a very tough and strong cardboardand treat it with a solution of silicate of soda and sulfate ofmagnesia. Asbestos or other fibrous material may be treated orimpregnated in a like manner. While asbestos is from its natureincombustible, the silicate of soda and sulfate of magnesia when presentare not superfluous, as they at first soften and then cause the fibroussheets to set, which is desirable in making special shapes or forms. Bythis treatment the sheets 1 are made fireproof, are given increasedtenacity, and obviously become more burden-bearing. I then apply a coatof asphaltum varnish or other suitable waterproof paint or varnish. Whendry, the sheets may be cut up into various shapes and sizes andperforated or otherwise arranged for the reception of plaster or thelike.

Fig. 1 illustrates a partition or wall without plaster and constructedof perforated fibrous sheets or plates 1, which have been previouslyprepared as described. These sheets or plates 1 may simply be nailed tothe studding 2, as shown to the left in Fig. 1, or the plates may besecured by means of tie or distance pieces 3, which penetrate theperforations 4 and are bent over to clench the same. This is moreclearly shown in Fig. 2, where indicates plaster and the space 6 may befilled with any suitable incombustible material, ifdesired. The fibroussheets 1 may be'provided at one edge with an overlapping tongue 7, as inFig. 1, and the tongues of the lowermost sheets may be bent at rightangles to the sheets and by tacking them to the floor serve to rigidlysecure the partition or wall. The distance or tie pieces 3, which may beof metal or of fibrous material, as may be desired, may have teeth 8,which penetrate the perforations of the plates, as already explained, orthe tie -pieces may consist of a wire member, Fig. 6, having points 9,adapted to enter openings or spaces provided in the fibrous plates. InFig. 4 the distance-piece is shown as being corrugated.

In Fig. 7, 10 represents additional openings which may be provided inthe sheets or plates 1. Said plates are also shown as overlapping attheir edges and secured'by teeth 8.

Fig. 9 shows the mode of overlapping adjoining plates provided withcircular perforations having flanges of the form of truncated cones orfrustums, as in Fig. 10. In the latter figure, 11 indicates the flanges,the burs 12 of which are directed inward.

Fig. 11 shows a fibrous plate or sheet having perforations similar tothose shown in sheet 1 is corrugated or ribbed and provided withcircular perforations 15.

In Figs. and 16 the fibrous sheets are fluted. In the former figure thefiutings 16 extend horizontally, and in the latter figure they areinclined upward, so as to provide interstices, wells, or pockets for thereception of the plaster.

It will be obvious to those skilled in the art to which the inventionappertains that modifications may be made in details without departingfrom the spirit and scope of the same. Hence I do not limit myself tothe precise construction and arrangement of parts hereinabove described,and illustrated in the accompanying drawings; but,

' Having described the nature and objects of the invention, what I claimas new, and desire to secure by Letters Patent, is

1. Material for building purposes, consisting of fibrous sheets orplates impregnated with a solution of silicate of soda and sulfate ofmagnesia and adapted and arranged for the reception of plaster.

2. Material for building purposes, consisting of fibrous sheets orplates impregnated with a solution of silicate of soda and sulfate ofmagnesia and waterproofed.

3. Materialforbuildingpurposesconsisting of fibrous sheets or platesimpregnated with a solution of silicate of soda and sulfate of magnesiaand coated with a waterproof compound, and adapted and arranged for thereception of plaster.

4. Material for building purposes, consisting of fibrous sheets orplates impregnated with a solution of silicate of soda and sulfate ofmagnesia and coated with a waterproof compound, said sheets or plateshaving spaces for the reception of plaster.

5. Materialforbuildingpurposesconsisting of fibrous sheets or platesimpregnated with a solution of silicate of soda and sulfate of magnesiaand coated with a waterproof compound, said sheets or plates havingperforations for the reception of plaster.

(3. A partition, ceiling or wall, consisting of sidings, which areseparated by an air-space and composed of fire and water proof fibroussheets or plates which are perforated for the reception of plaster, andprovided at their edges with tongues, which overlap the edges ofadjoining plates, and tie or distance pieces extending transversely ofsaid air-space and rigidly connecting said sidings, substantially asdescribed.

'7. A partition, ceiling or wall, consisting of fibrous sheetsor platesimpregnated with'a solution of silicate of soda and sulfate of magnesiaand coated with a waterproof compound and adapted and arranged for thereception ofplaster, and a layer of plaster applied to said plates.

8. A partition or wall, consisting of fibrous sheets or platesperforated and impregnated with a solution of silicate of soda andsulfate of magnesia and coated with a Waterproof compound, and plasterapplied to said plates and keying through the perforations.

9. A partition or the like consisting of fibrous sheets or platesperforated and impregnated with a solution of silicate of soda andsulfate of magnesia and coated with a waterproof compound, tie ordistance pieces for spacing said plates, and plaster applied to saidplates and keying through the perforations.

10. Apartition,ceilingorlike construction, consisting of overlappingfibrous plates impregnated with a solution of silicate of soda andsulfate of magnesia, and adapted and arranged for the reception ofplaster.

11. A partition, ceiling or wall, consisting of fire and water prooffibrous sheets or plates provided at their edges with tongues, whichoverlap the edges of' adjoining plates, said fibrous sheets or plateshaving spaces for the reception of plaster, and transversely-extendingtie or distance pieces for rigidly securing the plates, substantially asdescribed.

12. Apartition,ceilingorlike construction, consisting of sidingsseparated by an air-space and composed of one-plyfire and water prooffibrous sheets or plates perforated for the reception of plaster andprovided at their edges with tongues, which overlap the edges ofadjoining plates, and tie or distance pieces extending transversely ofsaid air-space and rigidly connecting the sidings, substantially asdescribed.

In testimony whereof I have hereunto signed my name in the presence oftwo subscribing Witnesses.

MARK W'. MARSDEN. lVitnesses:

W. J. JACKSON, JAS. A. Bronnonn.

